配置一个公网IP映射到内网IP，发现外网访问不了，在内网debug规则发现如下错误：
result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: inside
output-status: up
output-line-status: up
Action: drop
Drop-reason: (sp-security-failed) Slowpath security checks failed
不知道是什么原因，我NAT配置：
# sh run nat | i 218.XX.XXX.XXX
nat (inside,outside) static 218.XX.XXX.XXX
# sh run object network | i 192.168.0.71
object network obj-192.168.0.1
host 192.168.0.1